According to an article posted by CNBC.com more than $500 million of XEM coin were hacked from the Japanese cryptocurrency exchange, coincheck.
Hackers stole several hundred million dollars' worth of a lesser-known cryptocurrency from a major Japanese exchange Friday.
Coincheck said that around 523 million of the exchange's NEM coins were sent to another account around 3 a.m. local time (1 p.m. ET Thursday), according to a Google translate of a Japanese transcript of the Friday press conference from Logmi. The exchange has about 6 percent of yen-bitcoin trading, ranking fourth by market share on CryptoCompare.
The stolen NEM coins were worth about 58 billion yen at the time of detection, or roughly $534.8 million, according to the exchange. Coincheck subsequently restricted withdrawals of all currencies, including yen, and trading of cryptocurrencies other than bitcoin.
Bloomberg first reported the hack. A CNBC email sent to Coincheck's listed address bounced back.
source: cnbc.com